user_names = ['lwj','lhm','chx','mwx','admin']

#user_names.clear()             # 程序条件调试代码。
if user_names :
    for user_name in user_names :
        if user_name == 'admin' :
            print('Hello admin,would you like to see a status report?')
        else :
            print('Hello ' + user_name.title() + ',thank you for logging in again.')
else :
    print('We need to find some users!')